Backfire??

Mike01ci · 09-09-2009, 08:40 PM

Quote:

Originally Posted by RPM90

Hey, what's all that beeping? It's not your 1 is it? Mine doesn't do that.
Is your cold idle that high, or are you giving it some pedal?
What was the ambient temp?

I don't get any burble, damn it!

Hmm...not that I've heard yours, I don't know that I would like that. The VW GTI has a cool burble type sound, but no bang.

-The beeping is my v1 powering up.
-No pedal at all at idle, this car has the loudest idle that I have ever heard. It was 68 degrees when I got into the car this morning... Like I said, I was blipping the throttle lightly to do it on purpose, I can drive it with out it doing it if I am paying attention.
-tomorrow morning, start your car, keep it in first til about 4k let off the throttle then barely blip the pedal and you will get some "pop," apply a little more pressure and you will get a loud one. you have to be blipping it fairly frequently....

Sansnoetic · 09-09-2009, 09:37 PM

Quote:

Originally Posted by mike07i

Is this what you guys are experiencing? I made this video this morning, I was purposefully letting off the throttle then barely blipping it. I got the car about 2 weeks ago, it is a Feb. build, and has the BMW Performance exhaust...

This is my 3rd N54, and every single one has done this w/ stock exhaust & golf tee mod, a 8/06 build (335i coupe), a 4/08 build (335i coupe) and now a 2/09 build (135i).

Yeah, that's what I'm getting --but again, only when the engine is "cold."

Mike01ci · 09-09-2009, 09:55 PM

Quote:

Originally Posted by Sansnoetic

Yeah, that's what I'm getting --but again, only when the engine is "cold."

yep, and when it is warm I get a gurgle...

Eazy-e · 09-10-2009, 11:19 AM

Quote:

Originally Posted by Formel1

Scared the neighbors this morning rolling up to the stop sign and rev'g back down in 1st...firecrackers...oooo...I just got goose bumps...someone pinch me... :O

I love that sound

ktdw · 09-10-2009, 01:44 PM

wow, I only get a backfire like that if I go off throttle after a heavy accerelation...and only sometimes. Though I do have the "snap, crackle, pop" that we all love so much

Formel1 · 09-10-2009, 08:19 PM

You guys say "backfire"...I say...ahhh...ooooo...free flow gas and track sounds....ever heard the MB F1 CLK? It's sick and will scare the CRAP out of you when it's driven by Bernd Maylander... :O

RPM90 · 09-11-2009, 10:22 PM

Quote:

Originally Posted by mike07i

-The beeping is my v1 powering up.
-No pedal at all at idle, this car has the loudest idle that I have ever heard. It was 68 degrees when I got into the car this morning... Like I said, I was blipping the throttle lightly to do it on purpose, I can drive it with out it doing it if I am paying attention.
-tomorrow morning, start your car, keep it in first til about 4k let off the throttle then barely blip the pedal and you will get some "pop," apply a little more pressure and you will get a loud one. you have to be blipping it fairly frequently....

Nope, nothing like that at all. I get cool burble once in a while, but nothing louder than that, and nothing like what you and others have no matter what I do. Seems some TT's are much richer at cold start than others.

Lionel Hutz · 10-28-2009, 09:43 PM

My dealer recently fixed this issue (like the clip posed by mike07i, but not as loud) by replacing a coolant temperature sensor and updating the engine software. It is definitely a defect, don't let your dealer tell you otherwise.

09-10-2009, 01:44 PM	#71
ktdw BMWCCA #401908 54 Rep 470 Posts Drives: 135i Join Date: Apr 2008 Location: Bay Area iTrader: (0)	wow, I only get a backfire like that if I go off throttle after a heavy accerelation...and only sometimes. Though I do have the "snap, crackle, pop" that we all love so much __________________ Vishnu PROcede v3, Vishnu Dual Cone Intake, Code3 FMIC, Riss Racing Downpipes, Riss Racing Exhaust, H&R Sport Springs Best 1/4 mile: 12.583 @ 117.609 mph
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09-10-2009, 08:19 PM	#72
Formel1 Second Lieutenant 47 Rep 257 Posts Drives: 2009 BMW 135i Join Date: Jul 2009 Location: Winter Park, FL iTrader: (1)	You guys say "backfire"...I say...ahhh...ooooo...free flow gas and track sounds....ever heard the MB F1 CLK? It's sick and will scare the CRAP out of you when it's driven by Bernd Maylander... :O
	Appreciate 0 Quote

10-28-2009, 09:43 PM	#74
Lionel Hutz Lieutenant 229 Rep 509 Posts Drives: '24 X5 50e Join Date: Apr 2009 Location: SoCal iTrader: (0)	My dealer recently fixed this issue (like the clip posed by mike07i, but not as loud) by replacing a coolant temperature sensor and updating the engine software. It is definitely a defect, don't let your dealer tell you otherwise.
	Appreciate 0 Quote